Case Studies Flashcards
What’s an aim
A statement of what the study is being carried out to find
Qualitative data
Data involving stories or attitudes
Quantitative data
Data that involve numbers and statistics such as %
What is a case study
A research method studying an individual or a small group and gathering in depth and detailed information using different means
What is the aim of Palmer 1977 study
He wanted to find out whether context would affect perception
What was Palmer’s procedure
64 students were tested
Is a lab experiment
They were shown visual scenes for two seconds for example a kitchen and a context. The participants were then briefly shown an object to identify objects included a mailbox a loaf and a drum. They were given written instructions to follow
Every participant was tested in each of the four conditions this is a repeated measures design.
What are the four conditions of palmers study
- Appropriate, e.g. recognising a loaf after seeing a kitchen scene
- Inappropriate, e.g. similar objects recognising a mailbox which looks like a loaf after seeing a kitchen scene
- inappropriate different objects, e.g. recognising a drum after seeing a kitchen scene
- no context
What were the results of Palmer’s study
The participants correctly identified the most objects after seeing an appropriate context and the least after seeing in inappropriate context
What was the conclusion of Palmer’s study
Expectations affect perception. People have a perceptual set based on context which affects how accurately they recognise objects
Strengths of Palmer’s study
- Palmer controlled how long participants saw the context and the object for, so the differences in accuracy were not caused by having longer to remember some objects
- they had instructions they knew exactly what to do
- Data from two possible participants was not used as they had forgotten there glasses. This is good because poor vision could have affected the results
Weaknesses of Palmer’s study
- because the participants were told what they would be doing, this my have cause them to try harder in some conditions. Differences between recall in different visual contexts might then have been because the participants were trying to please the experimenter
- as data from some participants couldn’t be used, this means there were fewer results